CN215762735U - Anti-loosening bolt - Google Patents
Anti-loosening bolt Download PDFInfo
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- CN215762735U CN215762735U CN202120788829.8U CN202120788829U CN215762735U CN 215762735 U CN215762735 U CN 215762735U CN 202120788829 U CN202120788829 U CN 202120788829U CN 215762735 U CN215762735 U CN 215762735U
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- thread
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- nut
- fastening nut
- locking
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Abstract
The utility model discloses a loosening-preventing bolt which comprises a bolt head and a bolt rod, wherein the bottom of the bolt rod is connected with a first elastic washer and a second elastic washer, an upper connecting piece and a lower connecting piece are arranged between the first elastic washer and the second elastic washer, a fastening nut and a locking nut with opposite thread directions are respectively screwed and compounded on the threaded part of the bolt rod, a fastening nut internal thread and a fastening nut external thread are arranged on the fastening nut, and a locking nut internal thread and a locking nut external thread are arranged on the locking nut.
Description
Technical Field
The utility model relates to the technical field of bolts, in particular to an anti-loosening bolt.
Background
At present, the bolt structure easily causes the fixed equipment to become flexible because of the continuous vibration of equipment, and then causes equipment trouble and accident scheduling problem. The diameter of the existing Down's anti-loose bolt is variable and discontinuous, so the overall strength of the bolt is insufficient, the bolt is easy to break and is difficult to process; the existing check bolt has the disadvantages and shortcomings of complicated structure, complexity, unreliability, multiple parts, heavy weight, high cost and difficult mass production.
There are four types of threaded fasteners commonly used on the market for preventing loosening:
the first is friction lock. This is the case with the hadlock locknuts in japan. Eventually, the nut will loosen and the threaded coupling will fail.
The second way is mechanical anti-loosening. The relative rotation of the screw thread pairs is directly limited by a braking piece. Such as cotter pins, steel wires, and snap washers. This way the disassembly is inconvenient.
The third mode is rivet punch anti-loosening. After the screw is screwed down, the screw pair loses the characteristics of the kinematic pair by adopting methods such as punching, welding, bonding and the like so as to be connected into a non-detachable connection. The disadvantage of this approach is that the bolt can only be used once and is difficult to remove, necessitating destruction of the bolt to allow removal.
The fourth mode is structure anti-loosening. The anti-loosening of the Down's screw is realized by utilizing the self structure of the screw pair, namely, the anti-loosening mode of the reticular screw and the multiple elastic self-locking structure adopted by the utility model.
The first three types of anti-loosening methods mainly rely on the third person to perform anti-loosening, which mainly refers to friction. The novel structure is anti-loose and does not depend on the force of a third party, and only depends on the self elastic self-locking structure, so that the anti-loose bolt is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a locking bolt to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a locking bolt that moves, includes bolt head and shank of bolt, the shank of bolt bottom is connected with first elastic washer and second elastic washer, be provided with connecting piece and lower connecting piece between first elastic washer and the second elastic washer, the bolt shank screw portion is gone up respectively the spiro union complex has fastening nut and lock nut opposite in screw direction, fastening nut is last to be provided with fastening nut internal thread and fastening nut external screw thread, lock nut is last to be provided with lock nut internal thread and lock nut external screw thread.
Preferably, both the outer wall of the upper thread part of the bolt rod is provided with a right-handed thread line, and a left-handed thread line is superposed on the right-handed thread line of the thread part of the bolt rod on the side, away from the bolt head, of the fastening nut.
Preferably, one end of the fastening nut, which is close to the locking nut, is provided with a slot, the outer surface of the slot is provided with a fastening nut external thread, and a fastening nut internal thread is arranged inside the fastening nut.
Preferably, one end of the locking nut, which is close to the fastening nut, is provided with an insertion part, the outer surface of the insertion part is provided with a locking nut external thread, and the inside of the locking nut is provided with a locking nut internal thread.
Preferably, the fastening nut internal thread is combined with the bolt rod threaded part along a right-hand thread line on the bolt rod threaded part.
Preferably, the locking nut internal thread is combined with the bolt shank threaded portion along a left-hand thread line on the bolt shank threaded portion.
Preferably, the fastening nut external thread is in meshed threaded connection with the locking nut external thread.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model prevents the bolt from loosening by utilizing the forward and reverse rotation compaction principle, and the reverse threads of the fastening nut and the locking nut are arranged under the condition that the friction force fails, so that the pretightening force of the locking nut is increased when the fastening nut is slightly loosened and moves outwards due to natural loosening or external vibration, and the anti-loosening of the threads is realized.
2. According to the utility model, through the arrangement of the external thread of the fastening nut, the slot, the inserting part and the external thread of the locking nut, when the fastening nut tends to loosen under the action of vibration or external force, the external thread of the fastening nut and the external thread of the locking nut can play a self-locking role under the interaction effect, so that the nut is prevented from loosening.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a schematic structural view of the fastening nut of the present invention.
Fig. 3 is a schematic structural view of the locking nut of the present invention.
In the figure: the bolt comprises a bolt head 1, a bolt rod 2, a first elastic washer 3, a second elastic washer 4, an upper connecting piece 5, a lower connecting piece 6, a fastening nut 7, a locking nut 8, a fastening nut internal thread 9, a fastening nut external thread 10, a locking nut internal thread 11, a locking nut external thread 12, a right-handed thread line 13, a left-handed thread line 14, a slot 15 and a plug part 16.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, the present invention provides a technical solution for a locking bolt: a loosening-preventing bolt comprises a bolt head and a bolt rod, wherein the bottom of the bolt rod is connected with a first elastic washer and a second elastic washer, an upper connecting piece and a lower connecting piece are arranged between the first elastic washer and the second elastic washer, a fastening nut and a locking nut with opposite thread directions are respectively screwed and compounded on a thread part of the bolt rod, a fastening nut internal thread and a fastening nut external thread are arranged on the fastening nut, a locking nut internal thread and a locking nut external thread are arranged on the locking nut, a right-handed thread is arranged on the outer wall of the thread part on the bolt rod, a left-handed thread is superposed on the right-handed thread of the thread part of the bolt rod on the side of the fastening nut away from the bolt head, a slot is arranged at one end of the fastening nut close to the locking nut, a fastening nut external thread is arranged on the outer surface of the slot, and a fastening nut internal thread is arranged inside the fastening nut, one end of the locking nut, which is close to the fastening nut, is provided with a splicing part, the outer surface of the splicing part is provided with a locking nut external thread, a locking nut internal thread is arranged inside the locking nut, the fastening nut internal thread is combined with the bolt rod thread part along a right-handed thread line on the bolt rod thread part, the locking nut internal thread is combined with the bolt rod thread part along a left-handed thread line on the bolt rod thread part, and the fastening nut external thread is meshed with the locking nut external thread.
The use principle is as follows: when in use, the screw thread parts of the bolt rod 2 respectively penetrate through the upper connecting piece 5 and the lower connecting piece 6, the first elastic washer 3 and the second elastic washer 4 are respectively matched between the bolt head 1 and the lower connecting piece 6 and between the nut to be installed and the upper connecting piece 5, the fastening nut 7 is screwed along the right-handed thread line 13 of the screw thread part of the bolt rod 2 so that the bolt is fixed on the connecting piece, the locking nut 8 is screwed along the left-handed thread line 14 of the screw thread part of the bolt rod 2, and simultaneously the locking nut external thread 12 on the outer surface of the insertion part 16 on the locking nut 8 is in threaded connection and screwed with the fastening nut external thread 10 on the outer surface of the slot 15 on the fastening nut 7. The anti-loosening screw thread is realized, and through the arrangement of the external screw thread of the fastening nut, the slot, the inserting part and the external screw thread of the locking nut, when the fastening nut tends to loosen under the action of vibration or external force, the external screw thread of the fastening nut and the external screw thread of the locking nut have a self-locking effect under the interaction effect, so that the nut is prevented from loosening.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. A locking bolt that moves which characterized in that: including bolt head (1) and shank of bolt (2), shank of bolt (2) bottom is connected with first elastic washer (3) and second elastic washer (4), be provided with between first elastic washer (3) and second elastic washer (4) connecting piece (5) and lower connecting piece (6), on shank of bolt (2) the screw portion respectively the spiro union have fastening nut (7) and lock nut (8) opposite in screw thread direction, be provided with fastening nut internal thread (9) and fastening nut external screw thread (10) on fastening nut (7), be provided with lock nut internal thread (11) and lock nut external screw thread (12) on lock nut (8).
2. A locking bolt as defined in claim 1, wherein: both be provided with dextrorotation thread (13) on the outer wall of screw portion on shank of bolt (2), be located fastening nut (7) and deviate from on dextrorotation thread (13) of bolt shank (2) screw portion of bolt head (1) one side and superpose again and be provided with levogyration thread (14).
3. A locking bolt as defined in claim 1, wherein: one end, close to the locking nut (8), of the fastening nut (7) is provided with a slot (15), the outer surface of the slot (15) is provided with a fastening nut external thread (10), and a fastening nut internal thread (9) is arranged inside the fastening nut (7).
4. A locking bolt as defined in claim 1, wherein: one end, close to the fastening nut (7), of the locking nut (8) is provided with an inserting portion (16), the outer surface of the inserting portion (16) is provided with a locking nut external thread (12), and a locking nut internal thread (11) is arranged inside the locking nut (8).
5. A locking bolt as defined in claim 1, wherein: and the fastening nut internal thread (9) is combined with the screw thread part of the bolt rod (2) along a right-hand thread line (13) on the screw thread part of the bolt rod (2).
6. A locking bolt as defined in claim 1, wherein: the locking nut internal thread (11) is combined with the thread part of the bolt rod (2) along a left-hand thread line (14) on the thread part of the bolt rod (2).
7. A locking bolt as defined in claim 1, wherein: the fastening nut external thread (10) is in meshed threaded connection with the locking nut external thread (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120788829.8U CN215762735U (en) | 2021-04-16 | 2021-04-16 | Anti-loosening bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120788829.8U CN215762735U (en) | 2021-04-16 | 2021-04-16 | Anti-loosening bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215762735U true CN215762735U (en) | 2022-02-08 |
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ID=80095155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120788829.8U Active CN215762735U (en) | 2021-04-16 | 2021-04-16 | Anti-loosening bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215762735U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115111250A (en) * | 2022-05-23 | 2022-09-27 | 中冶焦耐(大连)工程技术有限公司 | Double-nut anti-loose threaded connection method |
| CN115559981A (en) * | 2022-09-20 | 2023-01-03 | 中国铁建重工集团股份有限公司 | Locknut structure assembly |
| GB2617089A (en) * | 2022-03-28 | 2023-10-04 | Sensoteq Ltd | Fastening device for sensors |
-
2021
- 2021-04-16 CN CN202120788829.8U patent/CN215762735U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2617089A (en) * | 2022-03-28 | 2023-10-04 | Sensoteq Ltd | Fastening device for sensors |
| CN115111250A (en) * | 2022-05-23 | 2022-09-27 | 中冶焦耐(大连)工程技术有限公司 | Double-nut anti-loose threaded connection method |
| CN115559981A (en) * | 2022-09-20 | 2023-01-03 | 中国铁建重工集团股份有限公司 | Locknut structure assembly |
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